AU2006274792B2 - Cosmetic and/or dermatological composition for prevention and/or treatment of sensitive or dry skin - Google Patents

Abstract

The invention relates to a cosmetic and/or dermatological topical composition, of particular use for the prevention and/or treatment of sensitive and/or dry skin, comprising an effective amount of at least one particularly probiotic microorganism and/or a fraction or metabolite thereof in combination with an effective amount of at least one polyunsaturated fatty acid and/or polyunsaturated fatty acid ester and/or the salts or derivatives thereof in a physiologically-acceptable vehicle.

Description

COSMETIC AND/OR DERMATOLOGICAL COMPOSITION FOR PREVENTION AND/OR TREATMENT OF SENSITIVE OR DRY SKIN The present invention essentially relates to a topical composition, notably cosmetic and/or dermatologi cal, intended more particularly for the prevention and the treatment of skin qualified as "sensitive and/or dry 5 skin". Generally, the sensitive skin is defined by a particular reactivity of the skin. This cutaneous reactivity classically results in the display of discomfort signs in response to the 10 contact of the subject with a triggering member which can have various origins. It can be the application of a cosmetic product on the surface of the sensitive skin, food consumption, exposure to sharp variations in tem peratures, air pollution and/or ultraviolet or infra-red 15 rays. There are also associated factors such as the age and type of skin. Thereby, sensitive skin is more fre quent among dry or fatty skin than among normal skin. The appearance of these discomfort signs, which appear in the minutes following the contact of the sub 20 ject with the triggering member, is one of the essential characteristics of sensitive skin. They are mainly dysesthesic sensations. "Dysesthesic sensations" means essentially more or less painful sensations felt in a cu- 2 taneous area such as tingling, formications, itching or pruritus, burns, heating, discomfort, tugging, etc. These subjective signs generally exist without visible chemical signs such as red spots and exfoliations. It is 5 currently known that these irritation and cutaneous in tolerance reactions are notably related to a release of neuropeptides by the nerve endings of the epidermis and dermis. As opposed to the skin qualified as allergic, 10 the reactivity of a sensitive skin does not result from an immunologic process, i.e. does not only occur on al ready sensitized skin, in response to the presence of an allergen. Its response mechanism is known as "aspeci fic". For this reason, it needs to be distinguished from 15 the skin showing inflammatory and allergic reactions of dermatosis, eczema, and/or ichtyosis type, and regarding which a certain number of treatments have already been proposed. Thereby, WO 02/28402 describes that probiotic 20 microorganisms can have a beneficial effect in the regu lation of cutaneous over-sensitive reactions such as in flammatory and allergic reactions which result from an immunologic process as opposed to the reactivity of a sensitive skin. It is also reported in "Probiotics in 25 the management of atopic eczema, Clinical and Experimen tal Allergy 2000", Volume 30, pages 1604-1610, a study concerning the effect of probiotics on the infantile im mune system mechanisms such as for example the atopic dermatitis. US 5,756,088 describes a diet having prophy 30 lactic and therapeutic effects on the animal dermatosis. This diet comprises the ingestion of compositions com prising a polyunsaturated fatty acid and/or biotin, a Bi fidobacterium, a bacterium with lactic acid or a Bacil lus. As for WO 01/17365, it describes a method enabling 35 the animal skin and fur to be improved by providing them 3 with a nutritional agent comprising a prebiotic or probiotic agent. With regards to document WO 01/45721, it proposes cosmetic, pharmaceutical, veterinary compositions with 5 topical application, more particularly intended to prevent and/or reduce the disorders induced by the pathogenics of the cutaneous system. For this, these compositions take advantage of the capability of certain lactic bacteria to adhere, on the one hand, to the cutaneous cells and on the 10 other hand, to regulate the attachment of cutaneous pathogenics. US 5,656,268 offers biological products associating lactic ferments with a vegetable oil. In fact, none of these documents are concerned with 15 the prevention and/or treatment of skin qualified as sensitive, which we notably find in the adult, particularly when this sensitive skin is associated with dry skin. The dry skin primarily appears with a feeling of tugging and/or strain. It is often associated with a decrease in the 20 cutaneous hydration rate and a modification of the barrier function, measured by the insensitive water loss. In an unexpected way, the inventors noted that microorganisms in particular the probiotic microorganisms could prove to be effective, particularly in the adult, for 25 the treatment of sensitive skin, particularly associated with dry skin provided that they are associated with an effective amount of at least one unsaturated fatty acid. The inventors thereby discovered that the topical administration of such a composition, i.e. by direct 30 application to the skin, proved to be particularly effective. Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part 35 of common general knowledge in the field.

4 It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative. According to a first aspect, the invention provides a 5 cosmetic and/or dermatological topical composition, notably useful for the prevention and/or treatment of sensitive and/or dry skin, comprising at least an effective amount of at least one probiotic microorganism, wherein the microorganism is selected amongst the Saccharomyces 10 cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, 15 Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus casei (Shirota), Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, 20 Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus casei subsp. casei, Lactobacillus paracasei, Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus 25 reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. 30 Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and 35 mixtures thereof and/or a fraction or a metabolite thereof in combination with an effective amount of at least one polyunsaturated fatty acid and/or polyunsaturated fatty 5 acid ester and/or a salt or derivative thereof in a physiologically-acceptable vehicle. According to a second aspect, the invention provides a cosmetic method comprising at least one application step to 5 the skin of a topical composition comprising at least an effective amount of at least one probiotic microorganism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces 10 pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus 15 acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus casei (Shirota), Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, 20 Lactobacillus alimentarius, Lactobacillus casei subsp. case, Lactobacillus paracasei, Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus 25 lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus 30 carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof 35 in combination with an effective amount of at least one unsaturated fatty acid, and/or unsaturated fatty acid ester 5a and/or a salt and/or derivative thereof in a physiologically-acceptable vehicle. According to a third aspect, the invention provides a use of an effective amount of at least one probiotic 5 microorganism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, 10 Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus case (Shirota), Lactobacillus brevis, 15 Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus case subsp. case, Lactobacillus paracasei, Lactobacillus curvatus, 20 Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc 25 mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), 30 Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof in combination with an effective amount of at least one unsaturated fatty acid, and/or unsaturated fatty acid ester 35 and/or a salt and/or derivatives thereof for manufacturing a cosmetic or dermatological composition intended to treat or prevent sensitive skin disorders whether or not associated with a dry skin.

5b According to a fourth aspect, the invention provides a method of treating or preventing sensitive skin disorders whether or not associated with a dry skin comprising the steps of administering to a subject in need of said 5 treatment an effective amount of at least one probiotic micro-organism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, 10 Bifidobacterium breve, Bifidobacterium longum, Bifidobacterium animals, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, 15 Lactobacillus casei (Shirota), Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus casei subsp. 20 casei, Lactobacillus paracasei, Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus (faecalis, faecium), Lactococcus 25 lactis (subspp lactis or cremoris), Leuconostoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae 30 or even boulardii), Bacillus (cereus var toyo or subtilis), Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof in combination with an effective amount of at least one 35 unsaturated fatty acid, and/or unsaturated fatty acid ester and/or salt and/or derivatives thereof. Unless the context clearly requires otherwise, throughout the description and the claims, the words 5c "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to". 5 The association according to the invention can be formulated in oral or topical compositions. "Effective amount" means, according to the present invention, a sufficient amount to obtain the expected effect. 10 Sensitive and/or dry skin As specified previously, a sensitive skin is different from an allergic skin. Its reactivity does not result from an immunologic process and generally only results in dysesthesic sensations. 15 For obvious reasons, the absence of visible signs makes the diagnosis of sensitive skin difficult. Generally, this diagnosis relies on the questioning of the patient. Moreover, this symptomatology has an interest to make it possible to differentiate the sensitive skin, 20 whether or not associated with dry skin, from the contact irritation or allergy for which there are, on the other hand, visible inflammatory signs. Consequently, the development of "sensitive skin" products required to have evaluation tools for the skin 25 sensory reaction. Since their design, the first tools were inspired by the essential characteristic of sensitive skin, namely the presence of discomfort signs induced by a topical application. Thereby, the lactic acid "stinging test" was the first test suggested. It is carried out by 30 noting the tingling sensations reported by a volunteer after application of a 10% lactic acid solution on the sides of the nose. The subjects reporting moderate or strong tingling sensations are called "stingers" and considered as being with sensitive skin. Because of this 35 cutaneous sensitivity to the topical application of a product, these subjects are then selected to test products known as "sensitive skin products". More recently, to specifically activate the peripheral nerve endings, 5d involved in the discomfort and called nociceptors, recently identified as being involved in sensitive skin, new tests were proposed which precisely use other discomfort inductors, such as capsaicin. 5 This second type of test, described in EP 1,374,913, constitutes another tool, particularly useful for the diagnosis of sensitive skin.

6 According to the present invention, the sensi tive skin covers irritable skin and intolerant skin. An intolerant skin is a skin which reacts by heating, tugging, formications and/or red spots sensa 5 tions to various factors such as the application of cos metic or dermatological products or soap. In general, these signs are associated with an erythema and a hyper seborrheic or acneic skin, and even dermatitis, with or without dartre. 10 An irritable skin is a skin which reacts by a pruritus, i.e. by itching or tingling, to various factors such as the environment, emotions, food, wind, friction, razor, hard water with a high limestone concentration, variations in temperature, moisture or wool. 15 Generally, these two types of skin can be asso ciated with a cutaneous dryness with or without dartre, or with a skin which presents an erythema. As specified previously, the cutaneous dryness is often associated with a decrease in the cutaneous hy 20 dration rate, evaluated by corneometry, as well as with a deterioration of the barrier function, measured by the insensitive water loss. The dry skin essentially occurs by a tugging and/or strain sensation. This one is also rough to touch 25 and appears covered with scales. When the skin is slightly dry, these scales are abundant but not very visible to the naked eye. They are less and less numer ous but increasingly visible to the naked eye when this disorder worsens. 30 The origin of this cutaneous dryness can be of constitutional or acquired type. In the case of acquired dry skin, the interfer ence of external parameters such as exposure to chemical agents, difficult climatic conditions, sunbeams or even 35 certain therapeutic treatments (retinoids, for example) 7 is crucial. Under these external influences, the skin can then become momentarily and locally dry. That can concern any type of skin. In the case of the constitutional dry skin, two 5 categories can be distinguished: pathological skin and nonpathological skin. The pathological constitutional dry skin is primarily represented by atopic dermatitis and ichthyo ses. They are almost independent of the external condi 10 tions. The atopic dermatitis is described as being as sociated with a deficit in the metabolism of the lipids of the stratum corneum and notably of the ceramides. This pathology appears in the form of a xerosis, more or 15 less chronic, concerning a large surface of the body, as sociated with inflammatory and pruriginous thrusts by plates. The ichthyoses are the pathologies character ized by a genetic deficit affecting the keratinization 20 process at various stages. They are shown by a great ex foliation by plates. In the case of the nonpathological constitu tional dry skin, the severity of the dryness state can depend on the external factors already mentioned. This 25 category of skin covers the senile skin (characterized by a general reduction in the cutaneous metabolism with age) , the fragile skin (very sensitive to the external factors and often accompanied by erythema and rosacea) and the vulgar xerosis (of probable genetic origin and 30 appearing first and foremost on the face, the limbs and the back of the hands). The compositions, methods and uses according to the invention, thereby prove particularly effective for the prevention and/or treatment of the sensitive and/or 35 dry skin and more particularly the skin known as reac- 8 tive, irritable and/or intolerant, the acquired dry skin and/or the constitutional dry skin. Microorganisms and particularly probiotic mi croorganisms 5 The microorganisms appropriate for the inven tion are microorganisms which can be administered to the animal or the human without any risks. In particular, at least one microorganism known as probiotic type is used in the present invention. 10 According to the present invention, "probiotic microorganism" means a living microorganism which, when it is consumed in an adequate amount, has a positive ef fect on the health of its host "Joint FAO/WHO Expert Con sultation on Evaluation of Health and Nutritional Proper 15 ties of Probiotic in Food Including Powder Milk with Live Lactic Acid Bacteria, October 6, 2001", and which can particularly improve the intestinal microbial balance. According to an alternative of the invention, this microorganism is implemented in an isolated form, 20 i.e. not mixed with one or more compound(s) likely to be associated with it in its original environment. According to the invention, "metabolite" means any substance resulting from the metabolism of the micro organisms considered according to the invention, and also 25 granted with an effectiveness for the treatment of the sensitive and/or dry skin. According to the invention, "fraction" more particularly means a moiety of said microorganism granted with an effectiveness for the treatment of the sensitive 30 and/or dry skin by analogy with said entire microorgan ism. The microorganisms appropriate for the inven tion can notably be selected amongst Ascomycetes such as Saccharomyces, Yarrowia, Kluyveromyces, Torulaspora, 35 Schizosaccharomyces pombe, Debaromyces, Candida, Pichia, 9 Aspergillus and Penicillium, bacteria of the Bifidobacte rium, Bacteroides, Fusobacterium, Melissococcus, Propion Ibacterium, Enterococcus, Lactococcus, Staphylococcus, Peptostrepococcus, Bacillus, Pediococcus, Micrococcus, 5 Leuconostoc, Weissella, Aerococcus, Oenococcus, Lactoba cillus type, and mixtures thereof. As Ascomycetes particularly appropriate for the present invention, Yarrowia lipolitica and Kluyveromyces lactis, can be mentioned in particular as well as Sac 10 charomyces cereviseae, Torulaspora, Schizosaccharamyces pombe, Candida and Pichia. Concerning the probiotic microorganisms, the following bacterial and yeast types are generally used: - Lactic bacteria: which produce lactic acid 15 by fermentation of sugar. According to their morpholo gies, they are divided into two groups: e Lactobacillus species: Lactobacillus acidophilus; amylovorus, casei, rhamno sus, brevis, crispatus, delbrueckii 20 (subsp bul garicus, lactis), fermentum, helveticus, gallinarum, gasseri john sonii, paracasel, plantarum, reuteri, salivarius, alimentarius, curvatus, case subsp. case, sake 25 * Gocci: Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cre moris), Leuconstoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococ 30 cus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylo cocccus carnosus, Staphylococcus xylosus - Bifidobacteria or Bifidobacterium species: Bifidobacterium adolescentis, animals, bifidum, breve, 35 lactis, longum, infantis, pseudocatenulatum 10 - Yeasts: Saccharomyces cerevisiaee or even boulardii), - Other spore-forming bacteria: Bacillus (cer eus var toyo or subtilis), Bacillus coagulans, Bacillus 5 licheniformis, Escherichia coli strain nissle, Propioni bacterium freudenreichii, - and mixtures thereof. The lactic bacteria and the bifidobacteries are the probiotics more frequently used. 10 Specific examples of probiotic microorganisms are Bifidobacterium adolescentis, Bifidobacterium ani malis, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium lactis, Bifidobacterium longum, Bifido bacterium infantis, Bifidobacterium pseudocatenulatum, 15 Lactobacillus acidophilus (NCFB 1748); Lactobacillus amy lovorus, Lactobacillus case (Shirota), Lactobacillus rhamnosus (GG strain), Lactobacillus brevis, Lactobacil lus crispatus, Lactobacillus delbrueckii (subsp bulgari cus, lactis), Lactobacillus fermentum, Lactobacillus hel 20 veticus, Lactobacillus gallinarum, Lactobacillus gasseri, Lactobacillus johnsonii (CNC2 1-1225), Lactobacillus pa racasei, Lactobacillus plantarum, Lactobacillus reuteri, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus curvatus, Lactobacillus casei subsp. 25 casei, Lactobacillus sake Lactococcus lactis, En terococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconstoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolacto bacillus inulinus, Streptococcus salvarius subsp. Ther 30 mophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus, Saccharomyces (cere visiae or even boulardii), Bacillus cereuss var toyo or subtilis), Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freu 35 denreichii, and mixtures thereof.

11 The microorganisms can be formulated in powder state, i.e. in a dry form, or in the form of suspensions or solutions. More particularly, they are probiotic microor 5 ganisms from the lactic bacteria group, notably like Lac tobacillus and/or Bifidobacterium. As examples of these lactic bacteria, we can more particularly mention Lacto bacillus johnsonii, Lactobacillus reuteri, Lactobacillus rhamnosus, Lactobacillus paracasei, Lactobacillus casei 10 or Bifidobacterium bifidum, Bifidobacterium breve, Bifi dobacterium longum, Bifidobacterium animals, Bifidobac terium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis or Bifidobacterium pseudocatenulatum, and mixtures thereof. 15 The particularly appropriate species are Lacto bacillus johnsonii, Lactobacillus paracasei, Bifidobacte rium adolescentis, Bifidobacterium longum and Bifidobac terium lactis NCC 2818 filed respectively according to the Treaty of Budapest with the Pasteur Institute (28 rue 20 du Doctor Roux, F-75024 Paris cedex 15) on 06/30/92, 01/12/99, 04/15/99, 04/15/99, 06/07/05 under the follow ing descriptions CNCM 1-1225, CNCM 1-2116, CNCM 1-2168 and CNCM 1-2170 and CNCM 1-3446, and the Bifidobacterium longum (BB536) type and mixtures thereof. 25 According to a particular embodiment of the in vention, the composition comprises at least two different microorganisms, particularly probiotic microorganisms and/or metabolites and/or fractions thereof. These mi croorganisms can differ in nature, for example bacterium 30 and fungi, or even in family, in type, in species, or only in strain. The composition according to the invention can thereby comprise at least one microorganism selected amongst those mentioned previously, and a second microor 35 ganism also selected amongst these microorganisms or not.

12 According to an alternative of the invention, the composition contains at least one Lactobacillus sp microorganism and at least one Bifidobacterium sp micro organism, notably in sufficient amounts to guarantee an 5 administration at a rate of 1010 pfu/day, respectively. The microorganisms and/or fractions and/or me tabolites thereof can be formulated in a suitable vehicle in an amount equivalent to at least 103 pfu/g, in par ticular at doses varying from 105 to 1015 pfu/g, and more 10 particularly from 107 to 1012 pfu/g of vehicle. The compositions with topical application ac cording to the invention generally comprise from 103 to 102 pfu, in particular from 105 to 1010 pfu, and more particularly from 107 to 10 9 pfu of microorganisms, in 15 particular of probiotic microorganisms per gram of vehi cle. When the composition comprises metabolites, the metabolites contents in the compositions substantially correspond to the contents likely to be produced from 103 20 to 1015 pfu, in particular from 10 5 to 1015 pfu,' and more particularly from 107 to 1012 pfu of living microorganisms per gram of vehicle. The microorganism(s) can be included in the composition according to the invention in a living, semi 25 active or inactivated, dead form. It/they can also be included in the form of fractions of cellular components or in the form of me tabolites. The microorganism (s) , metabolite(s) or frac tion(s) can also be introduced in the form of a freeze 30 dried powder, a culture supernatant and/or in a concen trated form, if necessary. According to a particular embodiment, the mi croorganisms are implemented in inactivated or even dead form, notably in the topical compositions.

13 Unsaturated fatty acids According to the present invention, "unsatu rated fatty acid" means a fatty acid comprising at least one double bond. They are more particularly fatty acids 5 with long chains, i.e. being able to have more than 14 carbon atoms. The unsaturated fatty acids can be in acid form, or in the form of salt, such as calcium salt the reof for example, or in the form of derivatives, notably 10 of fatty acid ester(s). The fatty acids can be monounsaturated such as petroselenic acid (in C 12 ) , palmitoleic acid (in C 16 ) or oleic acid (in C 18 ) , or can be polyunsaturated, i.e. pre senting at least two double bonds. 15 It is understood that the selection of fatty acids is carried out by taking into account the finality of the composition which comprises them, i.e. intended for a topical application, or an oral administration or an airway administration. 20 "Airway" means the upper airways (such as the nasal cavity, the sinus, the mouth, the pharynx for exam ple) and the pulmonary way. The polyunsaturated fatty acids notably com prise o-3 and ao-6 fatty acids, characterized by the 25 closest unsaturation position to the terminal methyl group, and mixtures thereof. Particularly appropriate for the invention are the unsaturated fatty acids comprising between 18 and 22 carbon atoms, in particular polyunsaturated fatty acids, 30 notably D-3 and o-6 fatty acids. Amongst the polyunsaturated fatty acids of the co-6 series, we can mention in particular linolenic acid with 18 carbon atoms and two unsaturations (18:2, o-6), y-linolenic acid with 18 carbon atoms and three unsatura 35 tions (18:3, co-6), dihomogamalinolenic acid with 20 car- 14 bon atoms and 3 unsaturations (20:3, o-6), the arachi donic acid, 5,8,11,14 eicosatetraenoic acid (20:4, (o-6) and docosatetraenoic acid (22:4, o-6). The polyunsaturated fatty acids of the o-3 se 5 ries can notably be selected amongst a-linolenic acid (18:3, o-3), stearidonic acid (18:4, o-3), 5,8,11,14,17-eicosapentaenoic acid or EPA (20:5, co-3), and 4,7,10,13,16,19-docosahexaenoic acid or DHA (22:6, co-3) , docosapentaenoic acid (22,5, co-3), 10 n-butyl-5,11,14-eicosatrienonic acid. Particularly appropriate for the invention are the a-linolenic acid, y-linolenic acid, stearidonic acid, eicosapentaenoic acid, docosahexaenoic acid, mixtures thereof or extracts comprising them. 15 According to an alternative of the invention, the fatty acid(s) considered is/are used in an isolated form, i.e. after extraction of its/their original sour ce(s). The fatty acid or fatty acid ester content, un 20 saturated or polyunsaturated in the compositions accord ing to the invention can vary between 0.0001% and 90% in weight, notably between 0.01 and 50% in weight, and in particular between 0.1 and 10% in weight with respect to the total weight of the composition. 25 According to another alternative, the unsatu rated fatty acids are added to the composition in the form of an oil or of a mixture of oils, rich in unsatu rated fatty acids, i.e. whose unsaturated fatty acid con tent enables an effective amount of unsaturated fatty ac 30 ids to be added, in particular of mono and/or poly unsaturated fatty acids. These oils generally have an unsaturated fatty acid content higher than approximately 35%, in particular higher than or equal to 40% in weight, with respect to 35 the total amount of fatty acids present in the oil.

15 According to an aspect of the invention, the oils considered as rich in polyunsaturated fatty acids will be used, i.e. whose polyunsaturated fatty acid con tent is higher than or equal to approximately 35%, even 5 higher than or equal to approximately 40% with respect to the total amount of fatty acids present in the oil. Preferably, the polyunsaturated fatty ac ids/monounsaturated fatty acids ratio in these oils is higher than 1, notably higher than or equal to 1.5. 10 The polyunsaturated fatty acid content can the reby be higher than or equal to 50%, even higher than or equal to 60%. According to another aspect of the invention, oils rich in monounsaturated fatty acids are used, i.e. 15 whose monounsaturated fatty acid content is higher than or equal to approximately 35%, even higher than or ap proximately equal to approximately 40% with respect to the total amount of fatty acids present in the oil. Preferably, the monounsaturated fatty ac 20 ids/polyunsaturated fatty acids ratio in these oils is higher than 1, notably higher than or equal to 1.5. The monounsaturated fatty acid content can the reby be higher than or equal to 50%, even higher than or equal to 60%. 25 According to some embodiments of the invention, we can however use oils with an unsaturated fatty acid content lower than those defined above, but rich in cer tain specific unsaturated fatty acids. By way of indication, we will use oils whose 30 unsaturated fatty acid content of interest for example is higher than or equal to 15% in weight, with respect to the total amount of fatty acids into the oil composition. The sources of y-linolenic acid can be selected amongst vegetable oils such as evening primrose, borage, 35 blackcurrant pips, echium and hemp oils, and spirulina 16 algae extracts (Spirulina maxima and Spirulina platen sis), for example. The vegetable oils of nuts, hazelnuts, almonds (Juglans regia), coriander and soya (Glycina max), colza 5 (Brassica naptus) , chia, flax, muscat rose tree and fish oils, for example, are rich in o-3 series polyunsatu rated fatty acids. The o-3 polyunsaturated fatty acids can also be found in the zooplankton, shellfish/mollusks and fish. 10 Fish oils constitute the main industrial source of EPA and DHA. The microalgae biomasses can also constitute a raw material for the extraction of a)-3 unsaturated fatty acids. Thereby, the unsaturated fatty acid can be im 15 plemented in the composition in the form of at least one oil selected amongst oils such as evening primrose, bo rage, blackcurrant pips, nut, soya, fish, sunflower, wheat germ, hemp, fenugreek, muscat rose tree, echium, argan tree, baobab tree, rice bran, sesame, almond, ha 20 zelnut, chia, flax, olive, avocado, safflower, coriander and/or microalgae extract (for example spirulina) , or zooplankton extract. According to an embodiment of the invention, the unsaturated fatty acid can, in particular, be imple 25 mented in the form of at least one oil selected amongst evening primrose, borage, blackcurrant pips, nut, soya, fish, sunflower, wheat germ, hemp, fenugreek, muscat rose tree, echium, argan tree, baobab tree, rice bran, sesame, almond, chia, flax, safflower oils and/or microalgae ex 30 tract (for example spirulina), or zooplankton extract. Among these oils, we can use, for example, fish oil and sesame oil as a source of polyunsaturated fatty acids. More particularly, we can select borage, saf 35 flower, hemp, chia (Salvia hispanica), echium, fenugreek, 17 wheat germ, flax, nut, evening primrose, blackcurrant pips, muscat rose tree, soya or sunflower oils as a source of polyunsaturated fatty acids. The oils particularly adapted to the contribu 5 tion of monounsaturated fatty acids in the compositions according to the invention are notably selected amongst argan tree oil, rice bran oil, and in particular amongst almond oil, avocado oil, coriander oil, hazelnut oil and olive oil. 10 However, certain oils can be used at the same time as a source of mono- and/or poly-unsaturated fatty acids. For this reason, we can mention baobab tree oil or rice bran oil for example, but also argan tree oil or 15 sesame oil. The compositions according to the invention can comprise these oils and/or extracts and/or biomasses in a content between 5 and 80% in weight, notably between 10 and 70% in weight with respect to the total weight of a 20 composition, notably intended for an oral administration. The compositions according to the invention can comprise these oils and/or extracts and/or biomasses at a concentration adjusted so that they are administered at a content between 0.1 g and 10 g/day, notably between 0.2 g 25 and 5 g/day. Of course, topical compositions, or associa tions according to the invention can further contain sev eral other active agents. As usable active agents, the B3, B5, B6, B8, C, 30 E, or PP vitamins, the niacin, the carotenoids, the poly phenols and minerals such as zinc, calcium, magnesium etc. can be mentioned. In particular, an antioxidant complex compris ing C and E vitamins, and at least one carotenoid can be 35 used, notably a carotenoid selected amongst p-carotene, 18 lycopene, astaxanthin, zeaxanthin and lutein, flavonoids such as catechines, hesperidin, proanthocyanidines and anthocyanines. It can also be at least one prebiotic or a mix 5 ture of prebiotics. More particularly, these prebiotics can be selected amongst oligosaccharides, produced from glucose, galactose, xylose, maltose, sucrose, lactose, starch, xylan, hemicellulose, inulin, acacia type gums for example, or a mixture thereof. More particularly, 10 oligosaccharide comprises at least one fructooligosaccha ride. More particularly, this prebiotic can comprise a mixture of fructo-oligosaccharide and inulin. The compositions according to the invention can appear in all the galenic forms normally used, according 15 to the administration mode chosen. The vehicle can be of various natures according to the type of composition considered. More particularly concerning the compositions for a topical administration, they can be aqueous, hydro 20 alcoholic or oily solutions, solution-type dispersions or lotion or serum-type dispersions, emulsions having a liq uid or semi-liquid consistency of milk type, suspensions or emulsions of cream type, aqueous or anhydrous gel, mi croemulsions, microcapsules, microparticles, or vesicular 25 dispersions of ionic and/or nonionic type. These compositions are prepared according to the usual methods. These compositions can notably constitute cleansing, protection, treatment or care creams for the 30 face, hands, feet, the large anatomical folds or the body, (for example day creams, night creams, make-up re movers, basic foundation creams, anti-sun creams) , make up products like fluid foundations, make-up remover milks, body milks for protection or care, after-sun 35 milks, lotions, gels or foams for skin care, like clean- 19 sing or disinfection lotions, anti-sun lotions, artifi cial suntan lotions, compositions for the bath, deodorant compositions containing a bactericidal agent, gels or af ter-shave lotions, depilatory creams, or compositions 5 against insect bites. The compositions according to the invention can also consist of solid preparations constituting soaps or cleansing bars. They can also be used for the hair in the form 10 of solutions, creams, gels, emulsions, foams or even in the form of aerosol compositions, also containing a pro pellant agent under pressure. When the composition of the invention is an emulsion, the proportion of the fatty phase can be situ 15 ated between 5 and 80% in weight, and preferably between 5 and 50% in weight with respect to the total weight of the composition. The oils, emulsifiers and coemulsifiers used in the composition in the form of emulsion are se lected amongst those classically used in the cosmetic 20 and/or dermatological field. The emulsifier and coemul sifier can be present, in the composition, in a propor tion between 0.3 and 30% in weight, and preferably be tween 0.5 and 20% in weight with respect to the total weight of the composition. 25 When the composition of the invention is an oi ly solution or gel, the fatty phase can represent more than 90% of the total weight of the composition. In a known way, the cosmetic and/or derma tological composition of the invention can also contain 30 conventional additives in the cosmetic, pharmaceutical and/or dermatological field, such as hydrophilic or lipo philic gelling agents, lipophilic or hydrophilic active agents, preservative, antioxidants, solvents, fragrances, fillers, filters, bactericides, odor absorbers and dyes. 35 The amounts of these various additives are those classi- 20 cally used in the field considered, and for example from 0.01 to 20% of the total weight of the composition. These additives, according to their nature, can be intro duced in the fatty phase and/or the aqueous phase. 5 As fats usable in the invention, in addition to the unsaturated fatty acids, we can mention mineral oils such as hydrogenated polyisobutene and petroleum jelly oil for example, vegetable oils such as a liquid fraction of shea butter, sunflower and apricot almonds oil for ex 10 ample, animal oils such as perhydrosqualene, synthesis oils notably oil of Purcellin, isopropyl myristate and ethylhexyl palmitate for example, and fluorinated oils such as perfluoropolyethers for example. We can also use fatty alcohols, fatty acids such as stearic acid and 15 waxes for example, notably of paraffin, carnauba and beeswax. We can also use silicone compounds like sili cone oils, and cyclomethicone and dimethicone, waxes, resins and silicone gums for example. As emulsifiers usable in the invention, we can 20 mention glycerol stearate, polysorbate 60, the cetyl stearylic alcohol/oxyethylenated cetylstearylic alcohol mixture with 33 mols of ethylene oxide for example, sold under the denomination Sinnowax AO® by the HENKEL com pany, the PEG-6/PEG-32/Glycol Stearate mixture sold under 25 the denomination of Tefosea 63 by the GATTEFOSSE company, PPG-3 myristyl ether, silicone emulsifiers such as cetyldimethicone copolyol and sorbitane mono-or tristearate, PEG-40 stearate, oxyethylenated sorbitane monostearate (200E). 30 As solvents usable in the invention, we can mention lower alcohols, notably ethanol and isopropanol, propylene glycol. As hydrophilic gelling agents, we can mention carboxylic polymers such as carbomer, acrylic copolymers 35 such as acrylate/alkylacrylate copolymers, polyacryla- 21 mides and notably the polyacrylamide C 13

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1 4 -Isoparaff in Laureth-7 mixture sold under the name of Sepigel 305a by the SEPPIC company, polysaccharides like cellulose de rivatives, such as hydroxyalkylcelluloses and in particu 5 lar hydroxypropylcellulose and hydroxyethylcellulose, na tural gums such as guar, carob and xanthan, and clays. As lipophilic gelling agents, we can mention modified clays such as the bentones, metal salts of fatty acids like aluminum stearates and hydrophobic silica, or 10 ethylcellulose and polyethylene. As hydrophilic active agents, we can use pro teins or hydrolysates of protein, amino acids, polyols notably in C 2

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1 o, such as glycerin, sorbitol, butylene glycol and polyethylene glycol, urea, allantoin, sugars 15 and derivatives of sugar, water-soluble vitamins, starch, bacterial or vegetable extracts like those of Aloe Vera. As lipophilic active agents, we can use retinol (vitamin A) and its derivatives, tocopherol (vitamin E) and its derivatives, ceramides, essential oils and 20 unsaponifiables (tocotrienol, sesamin, gamma oryzanol, phytosterols, squalenes, waxes, terpenes). Moreover, we can associate the active agents according to the invention, with active agents intended notably for the prevention and/or the treatment of skin 25 problems. The composition of the invention can also ad vantageously contain a thermal and/or mineral water, no tably selected amongst Vittel water, waters of the Vichy basin and Roche Posay water. 30 The cosmetic treatment method of the invention can be notably implemented by applying the cosmetic and/or dermatological compositions or associations as de fined above, according to the conventional technique of the use of these compositions. For example: applica 35 tions of creams, gels, sera, lotions, make-up remover 22 milks or after-sun compositions to the skin or dry hair, application of a hair lotion on wet hair, of shampoos, or application of toothpaste to the gums. The cosmetic method according to the invention 5 can be implemented by topical administration, a daily ad ministration for example, of the association according to the invention which can for example be formulated in the form of gels, lotions, emulsions. The method according to the invention can com 10 prise a single administration. According to another em bodiment, the administration is repeated 2 to 3 times daily for one day or more for example, and generally for an extended period of at least 4 weeks, even 4 to 15 weeks, with one or more periods of interruption if neces 15 sary. The use according to the invention can be such that the compositions or associations defined above are implemented in a formulation intended for a topical use. In the case of using an association according 20 to the invention orally, using a vehicle ingestible is preferred. Notably suitable as food or pharmaceutical ve hicles are milk, yoghurt, cheese, fermented milks, milk based fermented products, ice, products containing fer 25 mented cereals, milk-based powders, formulas for children and infants, confectionery food products, chocolate, ce reals, animal food in particular domestic animals, pills, capsules or tablets, oral supplements in dry form and oral supplements in liquid form. 30 For ingestion, numerous embodiments of oral compositions, and notably of food product supplements, are possible. Their formulation is carried out using the usual methods to produce sugar-coated tablets, hard gela tin capsules, gels, emulsions, pills, capsules. In par 35 ticular, the active agent(s) according to the invention 23 can be incorporated in any other form of food product supplements or enriched food, for example food bars, or powders which are compacted or not. The powders can be diluted with water, in soda, dairy products or derived 5 from soya, or be incorporated in food bars. According to a particular embodiment, the mi croorganisms can be formulated within compositions in a encapsulated form so as to significantly improve their survival duration. In such a case, the presence of a 10 capsule can in particular delay or avoid the degradation of the microorganism in the gastrointestinal tract. If the microorganisms are formulated in a com position intended to be administered orally, this compo sition can comprise between 10 3 and 1015 pfu/g of living 15 microorganisms, in particular between 105 and 1015 pfu/g, and more particularly between 107 and 1012 pfu/g of micro organisms per gram of vehicle, or at equivalent doses calculated for the inactive or dead microorganisms, or for microorganism fractions or metabolites produced. 20 In the particular case where the microorgan ism(s) is/are formulated in compositions administered orally, the microorganism(s) concentration, notably pro biotic microorganism, can be adjusted so as to correspond to doses (expressed in microorganism equivalent) between 25 5.10- and 1013 pfu/d, and in particular between 107 and 101 pfu/d. In the case of oral ingestion, the daily doses can, for o-3 fatty acids, be situated between 0.5 and 2500 mg/d, notably between 5 and 500 mg/d, and for (D-6 30 fatty acids between 0.5 and 5000 mg/d, notably between 5 and 2000 mg/d. In the case of using an association according to the invention by airway, the physiologically acceptable vehicle is selected amongst those usually used 24 by one skilled in the art to target the upper airways or the pulmonary way. Thereby, the compositions intended for the up per airways can be presented, by way of example, in the 5 shape of gargles, collutories, nasal preparations such as liquids for instillation or pulverization, powders or po mades. The compositions intended to target the pulmo nary way can be presented, notably, in the form of inha 10 lation or aerosol. Thereby, the compositions according to the in vention can be formulated so as to be adapted to distri bution by pulverizer. The effective amount of microorganisms accord 15 ing to the invention to be implemented in the formula tions for the airways are to be adapted according to the galenic form used and the targeted way. For example, the effective amounts per gram of vehicle and/or to be administered per day can be as pre 20 viously defined. The preparation of the compositions intended to be administered by airway can be carried out in any way known by one skilled in the art. In the description and the following examples, 25 unless otherwise specified, the percentages are percent ages in weight, and the ranges of values specified as "between... and... " include the specified low and high limits. The ingredients are mixed, before their shaping, in the order and under conditions easily determined by 30 one skilled in the art. The examples hereinafter are presented by way of example, and do not limit the field of the invention.

25 Examples of compositions Example 1: Face lotion for sensitive skin (% in weight) Lactobacillus paracasei (CNCM 1-2116) 5.00 5 Magnesium gluconate 3.00 Calcium Linoleate 2.00 Blackcurrant pips oil 5.00 Evening primrose oil 2.00 Borage oil 5.00 10 Antioxidant 0.05 Isopropanol 40.00 Preservative 0.30 Water qsp 100.00 Example 2: Face care milk for dry and sensi 15 tive skin (% in weight) Magnesium chloride 3.00 Calcium ascorbate 3.00 Lactobacillus paracasei (CNC74 1-2116) 5.00 20 Bifido bacterium longum (CNC 1-2170) 5.00 Magnesium gluconate 3.00 Calcium Linoleate 2.00 Blackcurrant pips oil 5.00 Evening primrose oil 2.00 25 Borage oil 5.00 Antioxidant 0.05 Isopropanol 20.00 Glycerol stearate 1.00 Cetylstearylic alcohol/oxyethylenated 30 cetylstearylic alcohol with 33 mols OE 3.00 (Sinnowax AO sold by the Henkel company) Cetylic alcohol 1.00 Dimethicone (DC 200 Fluid sold by the Dow 1.00 Corning company ) 35 Petroleum jelly oil 6.00 Isopropyl Myristate (Estol IPM 1514 sold 3.00 by Unichema) Antioxidant 0.05 Glycerin 20.00 40 Preservative 0.30 Water qsp 100.00 26 Example 3: face care gel for sensitive skin (% in weight) Lactobacillus johnsonii (CNCM 1-1225) 5.00 Hydroxypropylcellulose (Klucel H sold by 5 the Hercules company) 1.00 Bifido bacterium lactis (CNC74 1-3446) 5.00 Magnesium gluconate 3.00 Calcium Linoleate 2.00 Blackcurrant pips oil 5.00 10 Evening primrose oil 2.00 Borage oil 5.00 Antioxidant 0.05 Vitamin C 2.50 Antioxidant 0.05 15 Isopropanol 40.00 Preservative 0.30 Water qsp 100.00 Example 4: face care milk for dry and sensi tive skin 20 (% in weight) Magnesium ascorbate 3.00 Lactobacillus paracasei (CNCM 1-2116) 5.00 Magnesium gluconate 3.00 Calcium Linoleate 2.00 25 Blackcurrant pips oil 5.00 Coriander oil 2.00 Borage oil 5.00 Antioxidant 0.05 Isopropanol 40.00 30 Preservative 0.30 Water qsp 100.00 27 Example 5: Cream for the care of reactive skin (% in weight) Bifidobacterium Longum (CNCH 1-2170) 5.00 Coriander oil 2.00 5 Fish oil 5.00 Glycerol stearate 1.00 Cetylstearylic alcohol/oxyethylenated 3.00 cetylstearylic alcohol with 33 mols OE (Sinnowax AO sold by the Henkel company) 10 Cetylic alcohol 1.00 Dimethicone (DC 200 Fluid sold by the Dow 1.00 Corning company) Petroleum jelly oil 6.00 Isopropyl Myristate (Estol IPM 1514 sold 3.00 15 by Unichema) Glycerin 10.00 Preservative 0.30 Water qsp 100.00 Example 6: UNIDOSE POWDER SACHET (orally) 20 Active ingredient mg/sachet Lactobacillus lactis 12 100 (CNC 1-3446) Magnesium citrate 300 in magnesium mg 25 Calcium Citrate 1000 in calcium mg Fish oil 100 Borage oil 100 Nut oil 100 30 Excipient Maltodextrin qsp Sodium benzoate qsp One to three sachets can be taken per day.

28 Example 7: CAPSULE mg/capsule Lactobacillus paracasei 100.00 (CNCM 1-2116) 5 Blackcurrant pips oil 100.00 Fish oil 100.00 Magnesium stearate 0.02 Natural flavor qs Excipient qsp 10 One to three of these capsules can be taken per day. Example 8 A vitamin complex is added to the formulation of example 7, which comprises 30 mg of vitamin C, 5 mg of vitamin E and 2 mg of lutein. 15 Example 9 A vitamin complex is added to the formulation of example 7, which comprises 30 mg of vitamin C, 5 mg of vitamin E and 2 mg of lycopene by capsule. Example 10: CAPSULE 20 mg/capsule Vitamin C 30 Bifidobacterium longum 50 (CNCM 1-2170) Lactobacillus paracasei 50 25 (CNCM 1-2116) Blackcurrant pips oil 100.00 Excipients qsp Magnesium stearate 0.02 Natural flavor qs 30 One to three of these capsules can be taken per day. Example 11 A vitamin complex is added to the formulation of example 10, which comprises 5 mg of vitamin E and 2 mg of $-carotene or lutein.

29 Example 12 A vitamin complex is added to the formulation of example 10, which comprises 5 mg of vitamin E and 2 mg of lycopene by capsule. 5 Example 13 A mineral complex is added to the formulation of example 10,which comprises 200 mg of magnesium lactate and 400 mg of calcium lactate, 500 mg of polyphenol ex tracts. 10 Example 14: DOUBLE-CAPSULE mg/capsule 1 mg/capsule 2 Lactobacillus paracasei (CNCM 50 1-2116) Bifidobacterium longum (CNCH 50 15 1-2170) Grap pips oil 150 Coriander oil 150 Vitamin E 5 Carotenoid mixture 4 20 Natural flavor qs qs Excipient qsp qsp One to three capsules can be taken per day.

Claims (26)

1. A cosmetic and/or dermatological topical composition, notably useful for the prevention and/or treatment of sensitive and/or dry skin, comprising at least an effective 5 amount of at least one probiotic microorganism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, 10 Bifidobacterium longum, Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus casei (Shirota), 15 Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus case subsp. case, Lactobacillus paracasei, 20 Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc 25 mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus Saccharomyces cerevisiaee or even boulardii), Bacillus (cereus var toyo or subtilis), 30 Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof in combination with an effective amount of at least one polyunsaturated fatty acid and/or polyunsaturated fatty 35 acid ester and/or a salt or derivative thereof in a physiologically-acceptable vehicle. 31

2. A composition according to claim 1, comprising at least two different probiotic microorganisms, and/or fractions and/or metabolites thereof.

3. A composition according to any one of the preceding 5 claims, wherein the microorganism originates from the lactic bacteria group.

4. A composition according to any one of the preceding claims, wherein the microorganism is selected amongst Lactobacillus paracasei (CNCM 1-2116), Bifidobacterium 10 adolescentis (CNCM 1-2168), Bifidobacterium longum (CNCM I 2170), Bifidobacterium lactis (CNCM 1-3446), Bifidobacterium longum (BB536), and mixtures thereof.

5. A composition according to any one of the preceding claims, wherein the probiotic microorganism and/or a 15 fraction or a metabolite thereof are formulated in said vehicle in an amount equivalent to at least 103 pfu/g of vehicle.

6. A composition according to any one of the preceding claims, wherein the probiotic microorganism and/or a 20 fraction or a metabolite thereof are formulated in said vehicle in an amount varying from 103 to 1012 pfu/g of vehicle.

7. A composition according to any one of the preceding claims, wherein the probiotic microorganism and/or a 25 fraction or a metabolite thereof are formulated in said vehicle in an amount from 105 to 1010 pfu/g of vehicle.

8. A composition according to any one of the preceding claims, wherein the polyunsaturated fatty acid is selected amongst o-3, o-6 polyunsaturated fatty acids, and mixtures 30 thereof.

9. A composition according to any one of the preceding claims, wherein the polyunsaturated fatty acid comprises between 18 and 22 carbon atoms. 32

10. A composition according to any one of the preceding claims, wherein the polyunsaturated fatty acid is selected amongst linolenic acid, y-linolenic acid, di homogamalinolenic acid, arachidonic acid, eicosatetraenoic 5 acid, docosatetraenoic acid, a-linolenic acid, stearidonic acid, 5,8,11,14,17-eicosapentaenoic acid, 4,7,10,13,16,19 docosahexaenoic acid, docosapentaenoic acid, and n-butyl 5,11,14-eicosatrienonic acid.

11. A composition according to any one of the preceding 10 claims, wherein the polyunsaturated fatty acid is implemented in the form of at least one oil selected amongst evening primrose, borage, blackcurrant pips, nut, soya, fish, sunflower, wheat germ, hemp, fenugreek, muscat rose tree, echium, argan tree, baobab tree, rice bran, 15 sesame, almond, chia, flax, safflower oils and/or microalgae extract (for example spirulina), or zooplankton extracts.

12. A composition according to any one of the preceding claims, wherein the polyunsaturated fatty acid is present 20 in a content between 0.0001 and 90% in weight with respect to the total weight of the composition.

13. A composition according to any one of the preceding claims, wherein the polyunsaturated fatty acid is present in a content between 0.01 and 50% with respect to the total 25 weight of the composition.

14. A composition according to any one of the preceding claims, wherein the polyunsaturated fatty acid is present in a content between 0.1 and 10% in weight with respect to the total weight of the composition. 30

15. A composition according to any one of the preceding claims, wherein said composition is presented in the form of aqueous, hydroalcoholic or oily solutions, of solution type dispersions or lotion or serum-type dispensions, of emulsions having a liquid or semi-liquid consistency of the 33 milk type, obtained by dispersion of a fatty phase in an aqueous phase (H/E) or conversely (E/H), or of suspensions or emulsions having soft, semi-solid or solid consistency of the cream type, of aqueous or anhydrous gel, or even of 5 microemulsions, microcapsules, microparticles, or of vesicular dispersions of ionic and/or nonionic type.

16. A cosmetic method comprising at least one application step to the skin of a topical composition comprising at least an effective amount of at least one probiotic 10 microorganism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, 15 Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus casei (Shirota), Lactobacillus brevis, 20 Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus casei subsp. casei, Lactobacillus paracasei, Lactobacillus curvatus, 25 Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc 30 mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), 35 Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof 34 in combination with an effective amount of at least one unsaturated fatty acid, and/or unsaturated fatty acid ester and/or a salt and/or derivative thereof in a physiologically-acceptable vehicle. 5

17. A method according to claim 16, wherein the microorganism is as defined according to any one of claims 2 to 7.

18. A method according to claim 16 or claim 17, wherein the unsaturated fatty acid is a polyunsaturated fatty acid 10 such as defined to any one of claims 8 to 14.

19. A use of an effective amount of at least one probiotic microorganism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces 15 pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus 20 acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus case (Shirota), Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, 25 Lactobacillus alimentarius, Lactobacillus casei subsp. case, Lactobacillus paracasei, Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus 30 lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus 35 carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), 35 Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof in combination with an effective amount of at least one 5 unsaturated fatty acid, and/or unsaturated fatty acid ester and/or a salt and/or derivatives thereof for manufacturing a cosmetic or dermatological composition intended to treat or prevent sensitive skin disorders whether or not associated with a dry skin. 10

20. A use according to claim 19, wherein the combination is formulated in a composition intended for a topical use.

21. A use according to claim 19, wherein the combination is formulated in a composition intended for an oral administration, or an airway administration. 15

22. A use according to any one of claims 19 to 21, wherein the microorganism is as defined according to any one of claims 2 to 7.

23. A use according to any one of claims 19 to 22, wherein the unsaturated fatty acid is a polyunsaturated fatty acid. 20

24. A use according to any one of claims 19 to 23, wherein the unsaturated fatty acid is a polyunsaturated fatty acid as defined according to any one of claims 8 to 14.

25. A method of treating or preventing sensitive skin disorders whether or not associated with a dry skin 25 comprising the steps of administering to a subject in need of said treatment an effective amount of at least one probiotic micro-organism, wherein the microorganism is selected amongst the Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, 30 Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, 36 Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, Lactobacillus case (Shirota), Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, 5 Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus casei subsp. casei, Lactobacillus paracasei, Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), 10 Lactobacillus gasseri, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconostoc mesenteroides subsp dextranicum, Pediococcus acidilactici, 15 Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), Bacillus coagulans, Bacillus licheniformis, Escherichia 20 coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof in combination with an effective amount of at least one unsaturated fatty acid, and/or unsaturated fatty acid ester and/or salt and/or derivatives thereof. 25

26. A cosmetic and/or dermatological topical composition, notably useful for the prevention and/or treatment of sensitive and/or dry skin; a cosmetic method; use of an effective amount of at least one probiotic microorganism wherein the microorganism is selected amongst the 30 Saccharomyces cereviseae, Yarrowia lipolitica, Kluyveromyces lactis, Torulaspora, Schizosaccharomyces pombe, Candida, Pichia, Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium longum, 37 Bifidobacterium animalis, Bifidobacterium lactis, Bifidobacterium infantis, Bifidobacterium adolescentis, Bifidobacterium pseudocatenulatum, Lactobacillus acidophilus (NCF 748), Lactobacillus amylovorus, 5 Lactobacillus casei (Shirota), Lactobacillus brevis, Lactobacillus crispatus, Lactobacillus fermentum, Lactobacillus helveticus, Lactobacillus gallinarum, Lactobacillus plantarum, Lactobacillus salivarius, Lactobacillus alimentarius, Lactobacillus casei subsp. 10 case, Lactobacillus paracasei, Lactobacillus curvatus, Lactobacillus delbruckii (subsp. bulgaricus lactis), Lactobacillus gasseri, Lactobacillus johnsonii, Lactobacillus reuteri, Lactobacillus rhamnosus (GG strain), Lactobacillus sake, Lactococcus lactis, Enterococcus 15 (faecalis, faecium), Lactococcus lactis (subspp lactis or cremoris), Leuconstoc mesenteroides subsp dextranicum, Pediococcus acidilactici, Sporolactobacillus inulinus, Streptococcus salvarius subsp. Thermophilus, Streptococcus thermophilus, Staphylococccus carnosus, Staphylococcus 20 xylosus Saccharomyces (cerevisiae or even boulardii), Bacillus (cereus var toyo or subtilis), Bacillus coagulans, Bacillus licheniformis, Escherichia coli strain nissle, Propionibacterium freudenreichii, and mixtures thereof and/or a fraction or a metabolite thereof in combination 25 with an effective amount of at least one unsaturated fatty acid, and/or unsaturated fatty acid ester and/or a salt and/or derivatives thereof; a method of treating or preventing sensitive skin disorders substantially as herein described with reference to any one or more of the examples 30 but excluding comparative examples.